jewell



(No Model.)

0. H. J EWELL. STRAINER FOR SUCTION PIPES 0F PUMPS.

Patented Aug. 6, 1889..

UNITED STATES V ATENT FFICE.

, OMAR H. J E\VELL, OF ()IIICAGQILLINOIS, ASSIGNOR TO TVILLIAM M. JEVELLAND IRA H. JEVVELL, OF SAME PLACE.

STRAINER FOR sucrlon-mps's F PUMPS.

I l SPECIFICATION forming part of Letters Patent No. 408,487, datedAugust .6, 1889.

Application filed January 26,1889' Serial No. 297,723. (No model.)

To all whom it may concern:

' Be it known that I, OMAR 1T. JEWELL,a citizen of the United States ofAmerica, residing at Chicago, in thecounty of Cook and State ofIllinois, have invented certain new 1 it has been my object to provide astrainer that with, very narrow openings will afford a large inletofwater, and in which the width of the openings callbe readily adjusted tobe more or less, and which can be easily cleaned by expanding suchopenings either by hand or by a reverse stream of water; and with theseobjects in View my invention consistsof the novel devices andcombinations of devices hereinafter described and specifically Iclaimed.

A- denotes the coupling, being interiorly screw-threaded for-connectingthe same with the lower screw-threaded end of the suctionpipe of :apump, and having a spirallygrooved extension (1, for coupling one end ofspiral B, formed of wire, with its coils in close contact, and thisextension (1 again hav ing connected to be rigid therewith a U- shapedyoke b, extending into the spiral B, to

screw 1) to be passed through it.

justing-screw D has a collar 11' shouldering provide a guide for suchspiral. The lower end of spiral B is wound upon the spirally- "groovedrim of a cap 0, having an ey through its central hub for the stem of anad 1];lI1l Stlnagainst the upper or inward face of cap 0, whileitsscrew-threaded end is tapped'through the bottom end of yoke'b. Thisscrew D has also ahandle e, which may be ring-shaped,

Corresponding letters of reference desig for turning this screw by hand,and a setscrew f is tapped into the central hub of cap 0 for holding thescrew from turning after having been adjusted.

By turning screw D in a left-hand direction the spiral B will beelongated to any desired extent for increasing the interstices betweenthe ooils, and by turning the same in a right-hand direction theinterstices between the coils will be decreased all uniformly, so asufficient amount of water may be admitted therethrough, excluding allsolid matter contained-in the water.

' 'The advantageof a strainer so constructed is that it provides aspirally-continuous opening for admitting water, that with being verynarrow, will yet provide more entire opening than with perforations madeof much larger width or diameter, and'that the width of thisspirally-continuous opening can be readily adjusted to be more 0r less.I

Another great advantage is that after loosening the setscrew the spiralcan be 810111 gated by hand by grasping cap 0 and pulling it downward,when all solid matterclogging between the coils from the suction of thewater will drop ofi, and then by releasing the said cap'the coils willclose again to a degree the screw D will permit, which also can beaccomplished by reversing the current of water to pass from the pumpthrough the suction-pipe, thereby forcing out all solid mattime thespiral may be also elongated by-the pressure of the water passingthrough it. The set-screw f may be omitted, or its point may enter alongitudinal groove cut into the stem of screw D for preventing suchscrew D from turning, and still permit the piece 0 to slide thereon, forthe spiralB to be expanded either water.

What I'claim is-- A 1. Astrainer for the suction-pipe of apump orsiphon, consisting of a wire spiral secured with one end to acoupling-nozzle provided with a guide-yoke that extends into the spiral,and with its other end to a cap having an eye for the collared shank ofan adjustingscrew tapped into the guide-yoke for elonter gatheredbetween the coils, during which- -by-hand or from a reversemurrent ofthe gating or contracting sneh spiral, Substantially as and for thepurpose set forth.

2. A strainer for the suction-pipe of a pump or siphon, consisting of awire spiral secured with one end to a coupling-nozzle that extends intothe spinal, and with its .other end to a cap having an eye for theCollared shank of an adjusting-screw tapped into the screwnozzle forelongating and eontraeting thespiral, said screw being provided at itslower 10 projecting end with a handle for turning, said screw, allsubstantially as set forth.

In testimony whereof I affix inysignatuie in presence of two witnesses.

()MAR ll. .1 EWE'LL.

- \Vitnesses:

WM. 1!. Low, OTTO LUBKER'I.

